Sanding fairings after accident - Yamaha R6 Forum: YZF-R6 Forums
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post #1 of 44 (permalink) Old 06-08-2012, 01:54 PM Thread Starter
My R6 eats me.
 
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Sanding fairings after accident

I am in the process of repairing my 2007 R6S after an accident I had. In short I locked up the front tire and went for a ride, the bike flipped and landed on its top, and then landed on me. All is well.
My question is when sanding the ABS plastic do you have to get all of the paint out down to the bare plastic? Or do you need to just get through the clear coat? See pics for examples: Thanks!
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post #2 of 44 (permalink) Old 06-08-2012, 01:56 PM
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Re: Sanding fairings after accident

no you don't need to go all the way down to the plastic

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post #3 of 44 (permalink) Old 06-08-2012, 05:21 PM
bacon...
 
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Re: Sanding fairings after accident

Scary stuff. Glad you're ok!
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post #4 of 44 (permalink) Old 06-08-2012, 09:33 PM
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Re: Sanding fairings after accident

Just sand it to a uniform dull finish so the new paint has something to stick to.
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post #5 of 44 (permalink) Old 06-09-2012, 06:27 PM Thread Starter
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Re: Sanding fairings after accident

Thanks for the quick replies. I suffered a broken collar bone which is still kicking my butt 2 weeks later. All things considered that wasn't bad cause that bike was sitting on my head and shoulder when it came to rest.
I sanded the undertail with 150 and then block sanded it with 320. As you can see the clear coat is gone so, now it should be ready for priming? I plan on using Eastwoods candez system. Anybody have experience with that? Do I have to use an adhesion promoter before priming the ABS plastic? I'll be using Eastwood Epoxy Primer. Thanks!
Got the first crash out of the way.
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post #6 of 44 (permalink) Old 06-11-2012, 06:02 PM Thread Starter
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Re: Sanding fairings after accident

OK, got everything sanded down with 320 grit and the tank is temporarily rattle canned primed until my order gets here. I will be using the epoxy primer on the tank and a urethane on the plastics, and only the raw ABS plastic needs an adhesion promoter. Does that sound about right? Any help will be greatly appreciated! Thanks!
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post #7 of 44 (permalink) Old 06-13-2012, 06:46 AM Thread Starter
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Re: Sanding fairings after accident

Does anybody have experience painting? I just need a little guidance to make sure I've got a good plan.
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post #8 of 44 (permalink) Old 06-13-2012, 07:26 AM
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Check out chief's build/paint thread. I'd link, but it's a pain on mobile haha

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post #9 of 44 (permalink) Old 06-13-2012, 07:43 AM
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Re: Sanding fairings after accident

Quote:
Originally Posted by jlpierce View Post
Does anybody have experience painting? I just need a little guidance to make sure I've got a good plan.
I dabble in paint, been doing it a couple years now. Your plan is running in the right direction. Only bare materials need a primer, but I suggest priming the entire surface. After you let the primer dry, take a look at the piece from all angles and if there are any imperfections then the primer will bring them to sight. This way you don't spray color on your part just to find out you have a pin hole or some other imperfection. If you find a flaw that you cannot live with, wet sand the primer and spray again. If it's a deep flaw then you need to use some Bondo spot puddy, let dry, wet sand smooth, prime again, inspect, repeat if necessary.

Certain flaws in spots that aren't easily noticeable I wouldn't go through the trouble of making perfect, but of course that's all up to you. For large flaws after fiberglass or plastic weld repairs I recommend Bondo short strand fiberglass body filler. It's a two part product (add hardener) with fiberglass hair already in it. You mix it up and spread it on with a grocery store plastic card (well that's what I used since they're free, flexible, and work perfectly). Just make sure you add the correct amount of hardener; too little and the shit will take forever (like a day) to dry, or too much and it'll dry before you get a chance to spread it on evenly. I like to add a little more than recommended since it takes a quick mix, scoop up with the card, then slap it on the part. It'll dry enough for sanding in like 20 minutes or so. Great stuff.

Hope that helps.
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post #10 of 44 (permalink) Old 06-13-2012, 08:01 AM Thread Starter
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Re: Sanding fairings after accident

Thanks for the information LarryJ. I used glazing and spot putty from bondo to repair the tank. Do you think this will work or should I redo it with your method? The reason I used that was because it was I used for other minor imperfections on the rear tail fairing.
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